Mesoparasitic copepods (Copepoda: Cyclopoida) associated with polychaete worms in European seas Author Boxshall, Geoff A. Author O’Reilly, Myles Author Sikorski, Andrey Author Summerfield, Rebecca text Zootaxa 2019 2019-04-09 4579 1 1 69 journal article 27318 10.11646/zootaxa.4579.1.1 a72a13f8-f366-41db-835b-4b42169fd25b 1175-5326 2637477 A4015309-D9B3-4BB7-ABCB-B88A1F8CE5FC Family Saccopsidae Lützen, 1964 This family of highly transformed copepods was established by Lützen (1964b) to accommodate Saccopsis Levinsen, 1878 but Bresciani & Lützen (1975) later recognised that Saccopsis was a junior synonym of Melinnacheres M. Sars, 1870 . Subsequently Boxshall (1977) relegated Oestrella M’Intosh, 1885 to synonymy with Melinnacheres . Boxshall & Halsey (2004) provided a key to the four valid species of Melinnacheres . Prior to the present study the family comprised only the single genus, although a possible relationship with the genus inquirendum Flabellicola Gravier, 1918 , found on Flabelligera diplochaitus (Otto, 1820) in the Mediterranean ( Gravier 1918 ), was noted by Boxshall & Halsey (2004) .